Web - Server Web - Server

Discover the mechanisms, protocols and technologies used on the Internet and learn to abuse them!

These challenges are designed to train users on HTML, HTTP and other server side mechanisms. The following series of challenges will cultivate a better understanding of techniques such as : Basic workings of multiple authentication mechanisms, handling form data, inner workings of web applications, etc. ...

Prerequisites:
– Understand HTML.
– Understand the HTTP protocol.
– Ability to manipulate a web browser.

challenges 97 Challenges

Results Name ↓↑ Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide Yaml - Deserialization 1% 1520 35 Nishacid 2 20 April 2021
pas_valide XSS - Server Side 1% 3137 20 Elf 4 23 June 2023
pas_valide XSLT - Code execution 2% 3856 30 ghozt 5 16 July 2017
pas_valide XPath injection - String 2% 4044 40 g0uZ 5 26 May 2013
pas_valide XPath injection - Blind 1% 2455 75 g0uZ 5 27 December 2012
pas_valide XPath injection - Authentication 2% 6803 35 g0uZ 6 27 December 2012
pas_valide XML External Entity 2% 5826 35 sambecks 2 20 October 2014
pas_valide Weak password 31% 112893 10 g0uZ 7 3 October 2006
pas_valide Server Side Request Forgery 1% 1985 50 sambecks 7 22 June 2018
pas_valide SQL injection - Time based 2% 6020 45 ycam 4 11 September 2015
pas_valide SQL injection - String 7% 22609 30 g0uZ 10 24 December 2012
pas_valide SQL injection - Numeric 5% 15663 35 g0uZ 7 24 December 2012
pas_valide SQL injection - Insert 1% 3287 40 sambecks 4 23 February 2015
pas_valide SQL injection - Filter bypass 1% 3080 80 sambecks 7 21 July 2014
pas_valide SQL injection - File reading 2% 6072 40 Arod 3 19 October 2014
pas_valide SQL injection - Error 3% 8269 40 sambecks 5 4 March 2015
pas_valide SQL injection - Blind 3% 7974 50 g0uZ 6 27 February 2011
pas_valide SQL injection - Authentication - GBK 3% 10214 30 dvor4x 4 2 December 2015
pas_valide SQL injection - Authentication 13% 47535 30 g0uZ 11 27 February 2011
pas_valide SQL Truncation 2% 6998 35 Geluchat 2 1 May 2015
pas_valide SQL Injection - Second Order 1% 257 55 k4ndar3c 1 29 November 2023
pas_valide SQL Injection - Routed 2% 5615 35 soka 5 24 December 2016
pas_valide Ruby on Rails - ransack 1% 27 30 koma 0 23 June 2025
pas_valide Remote File Inclusion 4% 12159 30 g0uZ 8 25 November 2015
pas_valide Python - dotenv 1% 113 70 jrjgjk 1 27 September 2024
pas_valide Python - Server-side Template Injection Introduction 2% 4958 25 Podalirius 7 7 September 2021
pas_valide Python - Blind SSTI Filters Bypass 1% 721 75 Podalirius 5 7 September 2021
pas_valide PHP - type juggling 3% 9112 30 vic 4 10 March 2016
pas_valide PHP - register globals 5% 16280 25 g0uZ 2 8 October 2011
pas_valide PHP - preg_replace() 3% 9327 30 sambecks 4 2 March 2016
pas_valide PHP - assert() 5% 15973 25 Birdy42 10 26 November 2016
pas_valide PHP - Unserialize overflow 1% 812 55 mayfly 2 4 April 2020
pas_valide PHP - Unserialize Pop Chain 1% 762 55 Worty 2 22 October 2021
pas_valide PHP - Serialization 2% 6933 35 Arod 3 3 February 2014
pas_valide PHP - Remote Xdebug 1% 1563 25 mayfly 4 18 March 2020
pas_valide PHP - Path Truncation 2% 5588 35 Geluchat 6 25 March 2015
pas_valide PHP - Loose Comparison 3% 7517 30 ghozt 4 10 January 2018
pas_valide PHP - Filters 6% 20265 25 g0uZ 3 27 February 2011
pas_valide PHP - Eval - Advanced filters bypass 1% 659 40 Podalirius 2 8 July 2022
pas_valide PHP - Eval 2% 3775 40 chmod 10 8 November 2018
pas_valide PHP - Command injection 19% 68917 10 sambecks 10 20 September 2017
pas_valide PHP - Apache configuration 1% 2701 25 erk3 , nemoz 4 8 July 2022
pas_valide NodeJS - vm escape 1% 803 50 Podalirius 1 15 April 2021
pas_valide NodeJS - Prototype Pollution Bypass 1% 593 45 Worty 1 22 October 2021
pas_valide Node - Serialize 1% 1380 35 Mhd_Root 2 24 February 2021
pas_valide Node - Eval 1% 3117 30 Mhd_Root 7 24 February 2021
pas_valide NoSQL injection - Blind 1% 3147 45 ghozt 6 26 November 2016
pas_valide NoSQL injection - Authentication 3% 7961 35 mastho 8 31 May 2015
pas_valide Nginx - SSRF Misconfiguration 1% 321 30 .Yo0x 1 27 September 2024
pas_valide Nginx - Root Location Misconfiguration 1% 1365 15 .Yo0x 1 27 September 2024
pas_valide Nginx - Alias Misconfiguration 1% 3123 15 .Yo0x 3 27 September 2024
pas_valide Local File Inclusion - Wrappers 2% 3794 40 sambecks 4 2 March 2016
pas_valide Local File Inclusion - Double encoding 4% 13238 30 zM_ 4 13 June 2016
pas_valide Local File Inclusion 8% 26223 30 g0uZ 4 2 October 2011
pas_valide LDAP injection - Blind 1% 3564 55 g0uZ 2 8 June 2013
pas_valide LDAP injection - Authentication 3% 10667 35 g0uZ 8 26 May 2013
pas_valide Java - Spring Boot 1% 2408 40 dvor4x 3 24 December 2016
pas_valide Java - Server-side Template Injection 4% 11077 30 righettod 6 29 November 2015
pas_valide Java - Custom gadget deserialization 1% 235 50 Elweth 0 28 December 2023
pas_valide JWT - Weak secret 4% 12628 25 Jrmbt 7 21 August 2019
pas_valide JWT - Unsecure Key Handling 1% 914 35 Nishacid , Mika 5 23 February 2023
pas_valide JWT - Unsecure File Signature 1% 2590 25 Nishacid , Mika 3 23 February 2023
pas_valide JWT - Revoked token 2% 6524 25 ArnC 6 20 March 2020
pas_valide JWT - Public key 2% 4104 30 Jrmbt 5 21 August 2019
pas_valide JWT - Introduction 5% 18177 20 Kn0wledge 5 21 August 2019
pas_valide JWT - Header Injection 1% 1399 30 Nishacid , Mika 2 23 February 2023
pas_valide Install files 13% 44914 15 g0uZ 7 7 October 2006
pas_valide Insecure Code Management 4% 14330 20 Swissky 6 29 September 2019
pas_valide HTTP - Verb tampering 13% 47572 15 g0uZ 10 3 February 2011
pas_valide HTTP - User-agent 24% 86466 10 g0uZ 10 3 October 2006
pas_valide HTTP - POST 14% 51119 15 Th1b4ud 10 14 August 2018
pas_valide HTTP - Open redirect 19% 68839 10 Swissky 10 2 August 2017
pas_valide HTTP - Improper redirect 12% 43769 15 Arod 10 26 November 2014
pas_valide HTTP - IP restriction bypass 9% 31387 10 Cyrhades 8 23 March 2021
pas_valide HTTP - Headers 16% 56198 15 Arod 9 11 January 2015
pas_valide HTTP - Directory indexing 22% 79325 15 g0uZ 7 7 October 2006
pas_valide HTTP - Cookies 13% 46867 20 g0uZ 8 7 October 2006
pas_valide HTML - Source code 48% 174579 5 g0uZ 6 3 October 2006
pas_valide GraphQL - Mutation 1% 1642 40 CanardMandarin 2 20 October 2020
pas_valide GraphQL - Introspection 2% 4173 20 apges01 4 19 January 2023
pas_valide GraphQL - Injection 1% 902 30 apges01 2 19 January 2023
pas_valide GraphQL - Backend injection 1% 497 40 apges01 1 19 January 2023
pas_valide Flask - Unsecure session 1% 3131 20 Sanlokii 1 29 November 2023
pas_valide Flask - Development server 1% 1177 30 Sanlokii 1 29 November 2023
pas_valide File upload - ZIP 3% 9969 30 ghozt 3 3 August 2017
pas_valide File upload - Polyglot 1% 520 45 Cyxo 1 8 July 2022
pas_valide File upload - Null byte 7% 24649 25 g0uZ 4 26 December 2012
pas_valide File upload - MIME type 8% 28962 20 g0uZ 10 26 December 2012
pas_valide File upload - Double extensions 10% 35923 20 g0uZ 10 24 December 2012
pas_valide Elixir - EEx 1% 370 35 lolo42 1 29 November 2023
pas_valide Directory traversal 10% 36324 25 g0uZ 3 31 July 2011
pas_valide Command injection - Filter bypass 3% 7910 30 sambecks 6 20 September 2017
pas_valide CRLF 9% 32472 20 g0uZ 7 31 July 2011
pas_valide Backup file 16% 55527 15 g0uZ 10 27 February 2011
pas_valide API - Mass Assignment 1% 3550 20 Nishacid , Mika 2 18 January 2024
pas_valide API - Broken Access 2 1% 613 40 Nishacid , Mika 1 18 January 2024
pas_valide API - Broken Access 2% 5805 15 Nishacid , Mika 4 18 January 2024

Challenge Results Challenge Results

Pseudo Challenge Lang Date
roche Web - Serveur  PHP - Loose Comparison fr 1 July 2025 at 17:08
roche Web - Serveur  Injection de commande - Contournement de filtre fr 1 July 2025 at 17:07
synh Web - Serveur  HTTP - Verb tampering fr 1 July 2025 at 17:07
roche Web - Serveur  JWT - Secret faible fr 1 July 2025 at 17:03
Arnoloh Web - Serveur  PHP - preg_replace() fr 1 July 2025 at 17:01
loli Web - Serveur  Flask - Development server fr 1 July 2025 at 17:00
roche Web - Serveur  Insecure Code Management fr 1 July 2025 at 17:00
at0m741 Web - Serveur  API - Broken Access fr 1 July 2025 at 16:59
mangahazo Web - Serveur  File upload - Double extensions fr 1 July 2025 at 16:58
0xHTemp Web - Serveur  PHP - Injection de commande fr 1 July 2025 at 16:56